Michele Penza

TL;DR: In this paper, a WO3-based gas sensor has been fabricated by reactive reactive rf sputtering on glass substrates, where Palladium (Pd), platinum (Pt), gold (Au), noble metals (100-600 A), and Al layers (1500 A) were sputtered on top of them as upper electrodes for sensor output.

TL;DR: In this article, a surface acoustic wave (SAW) sensor was fabricated and characterized by either single-wall carbon nanotubes (SWCNTs) or multi-wall CNTs for chemical detection of volatile organic compounds (VOCs).

TL;DR: The 1st EuNetAir Air Quality Joint Intercomparison Exercise organized in Aveiro (Portugal) from 13th-27th October 2014, focused on the evaluation and assessment of environmental gas, particulate matter (PM) and meteorological microsensors, versus standard air quality reference methods through an experimental urban air quality monitoring campaign.

TL;DR: In this article, the sensing characteristics of the NOx gas detector based on tungsten trioxide (WO3) thin films are reported, where the d.c. electrical response to different gases of the WO3 thin films has been measured in the temperature range from 100 to 400°C showing an increase of electrical resistance with a good sensitivity towards NOx gases at 250°C.

TL;DR: This review examines the state of the art of both human and instrumental sensing currently used for the detection of odours and the main features and the working principles of modern electronic noses (E-Noses) are described, focusing on their better performances for environmental analysis.